Poo for brew? Ad firm spurs colon cancer checks with beer giveaway campaign March 5, 2021 2 This limited edition beer by DuClaw Brewing Co. is at the center of a cross-promotional campaign by Richmond ad agency Elevation. ( Images courtesy of Elevation) If unicorns defecating and breaking wind offends you, stop reading this now. It was the cross-promotion prospect of two brands known for such things — Squatty Potty, a toilet stool company famous for its viral video of unicorns doing their business; and DuClaw Brewing Co., a Baltimore-based brewer that makes a sour beer called Unicorn Farts — that led to the latest output from Richmond ad agency Elevation, which turned it all into an awareness campaign for colorectal health.